20199451720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1016069}}^1$

素因数の和:1016158

約数の個数: 64

約数和(自身を含む): 52673068800

約数和(自身を除く): 32473617080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3976, 4970, 9940, 19880, 1016069, 2032138, 4064276, 5080345, 7112483, 8128552, 10160690, 14224966, 20321380, 28449932, 35562415, 40642760, 56899864, 71124830, 72140899, 142249660, 144281798, 284499320, 288563596, 360704495, 504986293, 577127192, 721408990, 1009972586, 1442817980, 2019945172, 2524931465, 2885635960, 4039890344, 5049862930, 10099725860, 20199451720]

約数ペア:

[(1, 20199451720), (2, 10099725860), (4, 5049862930), (5, 4039890344), (7, 2885635960), (8, 2524931465), (10, 2019945172), (14, 1442817980), (20, 1009972586), (28, 721408990), (35, 577127192), (40, 504986293), (56, 360704495), (70, 288563596), (71, 284499320), (140, 144281798), (142, 142249660), (280, 72140899), (284, 71124830), (355, 56899864), (497, 40642760), (568, 35562415), (710, 28449932), (994, 20321380), (1420, 14224966), (1988, 10160690), (2485, 8128552), (2840, 7112483), (3976, 5080345), (4970, 4064276), (9940, 2032138), (19880, 1016069)]